Fair Values of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Foreign exchange forward
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net	$ (2,006)	$ (411)
Foreign exchange forward | Quoted Prices in Active Markets for Identical Assets / (Liabilities) - Level I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net	0	0
Foreign exchange forward | Significant Other Observable Inputs - Level II
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net	(2,006)	(411)
Foreign exchange forward | Significant Other Unobservable Inputs - Level III
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net	0	0
Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net		(12)
Interest rate swap | Quoted Prices in Active Markets for Identical Assets / (Liabilities) - Level I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net		0
Interest rate swap | Significant Other Observable Inputs - Level II
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net		(12)
Interest rate swap | Significant Other Unobservable Inputs - Level III
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities), at fair value, net		$ 0